Minnesota dad gets huge response to video against bullying, then learns twist

Brad Knudson went on YouTube to expose the alleged bullies he says targeted his 14-year old daughter. His video has been viewed more than 1.3 million times, but his online crusade also turned up a surprise in his own home. Susan-Elizabeth Littlefield of Minneapolis station WCCO spoke to the family in an interview you'll see only on "CBS This Morning."